US816772A - Process of smelting lead sulfid. - Google Patents

Process of smelting lead sulfid. Download PDF

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Publication number
US816772A
US816772A US26248905A US1905262489A US816772A US 816772 A US816772 A US 816772A US 26248905 A US26248905 A US 26248905A US 1905262489 A US1905262489 A US 1905262489A US 816772 A US816772 A US 816772A
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lead
matte
sulfid
smelting
iron
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US26248905A
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Anson G Betts
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B13/00Obtaining lead
    • C22B13/02Obtaining lead by dry processes

Definitions

  • iron 33.3 per cent.; lead, two per cent.; sodium, twenty-nine per cent.; calcium, .4 per cent, while the slag produced at the same time showed on analysis: FeO, 7.2 per cent.; SiO thirty-nine per cent.; CaO, 13.5 per cent.; MgO, .6 per cent.; A1 0 23.3 per cent.; Na O, 17.7 per cent.
  • Serial No. 262,490 filed herewith, for improvements in Smelting lead sulfid, I have shown and claimed methods of smelting lead sulfid, producing similar heavy metalalkali metal mattes and slags low in iron.
  • the sodium of the matte By recovering the sodium of the matte from such rocesses as a compound not containing su fur it can be used over again as desulfurizing agent, and by recovering the iron as oxid it, too, can be used over again as desulfurizing agent.
  • the recovery of the iron and sodium of the matte in useful form I most suitablycarry out by converting or bessemerizing the fluid matte by blowing a current of air through it or over it. When air is blown through the melted matte, the temperature goes up to a white heat, and large uantities of sulfurous acid are given off un er the oxidizing influence of the air.
  • roducts can be used for making caustic a kali, alkali carbonate, water-glass, &c.; but it is especially suitable for smelting fresh quantities of lead-sulfidcontaining materials.
  • Sodium ferrite (Fe,Na,O and carbon probably react with lead sulfid in smelting, as follows:
  • silica is present in the converting process applied to the matte it combines with the alkali metal; but this does no harm, for the silica in the product, if it be used in smelting lead ore, becomes eliminated in the slag. 1
  • the liberated sulfur dioxid andsulfur trioxid may be utilized in the manufacture of sulfuric acid by well-known methods.
  • the rocess of converting lead sulfid into meta lic lead and sulfurous gas which consists in reacting on it with materials containing an alkali metal and a heavy metal other than lead, roducing metallic lead, and
  • the rocess of converting lead sulfid into meta lic lead and sulfurous gas which consists in reacting on it with materials containing an alkali metal and a heavy metal other than lead, producing metallic lead, and
  • the rocess of converting lead sulfid into meta lic lead and sulfurous gas which consists in reacting on it with materials containingan alkali metal and a heavy metal other than lead, reducing metallic lead, and a heavy metal-a kali-metal matte, and eliminating sulfur from the fused matte with an air-blast.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Description

UNITED STATES,
PATENT orrrcn.
ANSON G. BETTS, OF TROY, NEW YORK.
PROCESS OF SMELTING LEAD S ULFID.
Specification of Letters Patent.
Patented April 3, 19 06 Application filed May 26,1906. Serial No. 262,489.
' from the matte.
In my application, Serial No. 208,946, filed May 20, 1904, I described a process of smelting lead sulfid with sodium-carbonate, carbon and iron oxid, or manganese oxid. By using a well-proportioned furnace charge and a moderately-high heat three separate products may be obtained instead of twonamely, lead, matte, and slag. Samples of the matte have shown by analysis S thirty-six per cent. iron, 33.3 per cent.; lead, two per cent.; sodium, twenty-nine per cent.; calcium, .4 per cent, while the slag produced at the same time showed on analysis: FeO, 7.2 per cent.; SiO thirty-nine per cent.; CaO, 13.5 per cent.; MgO, .6 per cent.; A1 0 23.3 per cent.; Na O, 17.7 per cent. In my application, Serial No. 262,490, filed herewith, for improvements in Smelting lead sulfid, I have shown and claimed methods of smelting lead sulfid, producing similar heavy metalalkali metal mattes and slags low in iron.
By recovering the sodium of the matte from such rocesses as a compound not containing su fur it can be used over again as desulfurizing agent, and by recovering the iron as oxid it, too, can be used over again as desulfurizing agent. The recovery of the iron and sodium of the matte in useful form I most suitablycarry out by converting or bessemerizing the fluid matte by blowing a current of air through it or over it. When air is blown through the melted matte, the temperature goes up to a white heat, and large uantities of sulfurous acid are given off un er the oxidizing influence of the air.
Numerous chemical changes take place, and these may be altered intentionally by changing the working temperature, speed of working, and additions to the charge, &c.f Examples of the reactions probably taking place are To induce the latter reaction; silica or slag should be in contact with or added to the 6 molten matte being oxidized according to any of the well-known methods. The roducts can be used for making caustic a kali, alkali carbonate, water-glass, &c.; but it is especially suitable for smelting fresh quantities of lead-sulfidcontaining materials. Sodium ferrite (Fe,Na,O and carbon probably react with lead sulfid in smelting, as follows:
Fe Na,O +4PbS+5C=4Pb+5OO+2FeS.Na S.
It will be noticed that if silica is present in the converting process applied to the matte it combines with the alkali metal; but this does no harm, for the silica in the product, if it be used in smelting lead ore, becomes eliminated in the slag. 1
The liberated sulfur dioxid andsulfur trioxid may be utilized in the manufacture of sulfuric acid by well-known methods.
What I claim as new, and desire to secure by Letters Patent, is
1. The rocess of converting lead sulfid into meta lic lead and sulfurous gas which consists in reacting on it with materials containing an alkali metal and a heavy metal other than lead, roducing metallic lead, and
a heavy metal-a1 ali-metal matte, and elimi- 9 nating a large part of the sulfur in combination with the alkali metal by air oxidation.
2. The rocess of converting lead sulfid into meta lic lead and sulfurous gas which consists in reacting on it with materials containing an alkali metal and a heavy metal other than lead, producing metallic lead, and
a heavy metal-alkali-mbtal matte, and eliminating a large part of the sulfur from the fused matte by air oxidation.
3. The rocess of converting lead sulfid into meta lic lead and sulfurous gas which consists in reacting on it with materials containingan alkali metal and a heavy metal other than lead, reducing metallic lead, and a heavy metal-a kali-metal matte, and eliminating sulfur from the fused matte with an air-blast.
4. The recess of converting lead sulfid into meta lie lead and sulfurous gas which consists in reacting on it with materials containing an alkali metal and a heavy metal other than lead, producing metallic lead, and
a heavy metal-alkali-metal matte, and eliminating sulfur from the fused matte by blowing a current of air through it when melted. 5. The rocess of converting lead sulfid into meta lic lead and sulfurous gas which consists in reacting on it with materials containing an alkali metal and iron, producing metallic lead and an iron-alkali-metal matte,
separating the lead and some slag from the matte, and oxidizing the fused matte by blowing a current through it when melted.
6. The process of converting lead sulfid into metallic lead and sulfurous gas which consists in reacting on it with materials containing iron and sodium, producing metallic lead and an-iron-sodium matte, separating the lead, and blowing a current of air through the melted matte.
7. The process of smelting lead ore which consists in reacting on it with materials containing iron and sodium, producing metallic lead and an iron-sodium matte, separating the lead, blowing a current of air through the melted matte, and using the product in smelting leadore. 1
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
ANSON G. BETTS.
Witnesses MARY BATES PAnKs, W. B. BARNHISEL.
US26248905A 1905-05-26 1905-05-26 Process of smelting lead sulfid. Expired - Lifetime US816772A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2850375A (en) * 1952-08-25 1958-09-02 Bertrand Andre Dry metallurgical process for extracting lead from its sulphide or oxidized ore
US3524743A (en) * 1967-02-02 1970-08-18 Unterharzer Berg Und Huttenwer Method of processing fly dusts containing sulphur,and smelter mixed oxides or other mixed oxides containing zinc and lead
EP0038124A1 (en) * 1980-03-20 1981-10-21 Asarco Incorporated Low temperature, non-SO2 polluting, kettle process for separation of lead from lead sulfide-containing material
US4521247A (en) * 1980-03-20 1985-06-04 Asarco Incorporated Low temperature, non-SO2 polluting, kettle process for separation of lead from lead sulfide-containing material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2850375A (en) * 1952-08-25 1958-09-02 Bertrand Andre Dry metallurgical process for extracting lead from its sulphide or oxidized ore
US3524743A (en) * 1967-02-02 1970-08-18 Unterharzer Berg Und Huttenwer Method of processing fly dusts containing sulphur,and smelter mixed oxides or other mixed oxides containing zinc and lead
EP0038124A1 (en) * 1980-03-20 1981-10-21 Asarco Incorporated Low temperature, non-SO2 polluting, kettle process for separation of lead from lead sulfide-containing material
US4333763A (en) * 1980-03-20 1982-06-08 Asarco Incorporated Low temperature, non-SO2 polluting, kettle process for separation of lead from lead sulfide-containing material
US4521247A (en) * 1980-03-20 1985-06-04 Asarco Incorporated Low temperature, non-SO2 polluting, kettle process for separation of lead from lead sulfide-containing material

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